“…One study did not mention age of patients (Vakil et al, 2012) and three studies categorised patients in age groups without further details about mean and SD (Rogers & Lowe, 2020; Yue et al, 2018; Zhang et al, 2020). Studies were mainly conducted in China (Fang et al, 2014; Fang et al, 2013; Gu et al, 2021; Li et al, 2013; X. Li, Sun, & Guo, 2016; W. Li, Zhang et al, 2016; Wu et al, 2020; Yan et al, 2017; Yang et al, 2014; Yuan et al, 2016; Yue et al, 2018; Zhang et al, 2020; Zhang et al, 2013), followed by India (Agarwal et al, 2014; Ghai et al, 2021; Sakthivel et al, 2017; Vora et al, 2017), the United Kingdom (Bekiroglu et al, 2011; Devine et al, 2001; Rogers et al, 2004; Rogers & Lowe, 2020), Brazil (Seferin et al, 2022; Soares et al, 2018), the United States (Larson et al, 2021; Ochoa et al, 2021), Germany (Hoene et al, 2021) and Pakistan (Vakil et al, 2012).…”